Self-gaging bevel wing butt hinge



Jan M, 19% J. WHITE ET AL 2,494,789

SELF-GAGING BEVEL WING, BUTT HINGE Filed Nov. 30, 1945 Patented Jan. 17, 1950 SELF-GAGING BEVEL WING BUTT HINGE John White and George D. Manville, Los Angeles, Calif.

Application November 30, 1945, Serial No. 631,897

This invention is an advance in what is known as butt hinges.

Hinges of the butt type are commonly sunk flush in various mounting parts such as jambs and door frames and it has been for many years the practice to scribe on the edge or face of the mounting part a plan outline of the relative wing of the hinge as well as the edge or thickness of the leaf or wing and then to chisel out the material to a uniform depth throughout the plan mark for the desired flush insertion of the wing. This chiseling operation had to be carefully and neatly done so that the fit of the wing would be ood and the wood work part unmarred by bad cuts and scratches.

The instant invention is characterized by numerous features and objects. One object is to eliminate the need for making a mortise of uniform depth into the wood stock or part into which'a hinge wing is to be countersunk and to accomplish this it is an object to provide a butt hinge in which each leaf or wingis of taperin or wedge shape cross-section transversely; that is from its pivot or pin side edge to its outer or swinging edge, the latter being almost knife-edge thin. Therefore, when such a wedge section wing is to be laid flush in a wood part there is made in the latter a mortise, which in cross-section is cut the same angle as is that of the hinge wing to be countersunk therein with the outer face of the sunk leaf flush with the plane face of the wooden part in which the hinge is to be screwed; in the usual manner.

A further object of the invention is to provide a butt hinge whose wing will become its own depth line marker to show the full depth of the mortise to be cut into the wood, and whose wing plan can be scribed in the usual manner in the plane face of the wood.

In this connection it is an object of this invention to provide a butt hinge leaf with a scribing bead whereby when the leaf is laid against the corner of a wooden part with the bead at the desired location on the relative face of the corner it will only be necessary to hit the applied leaf by the head of a hammer with just enough force to drive the bit feature of the bead into the wood and thus obtain an imprint or outline of the front side of the intended mortise in which the leaf is to be laid, and either before or after the bead bit impression is made the carpenter runs a scribing tool around the margin of the applied leaf on the relative plane face of the wood stock to outline the plan of the leaf.

4 Claims. (C1. 16-128) Another object of the invention is to provide a hinge leaf which can be economically produced from a long rolled stock strip of metal or other suitable material; it being an object to provide a simple, practical and low-cost method for mass production of hinges of this self-gaging, bevel wing type.

And a further object is to provide, in combination, a mounting part having a wedge section mortise and a butt hinge having a complementary section leaf or wing inclusive of a stop bead to define transverse location of the leaf when mounted in the mortised part.

The invention consists in certain advancements in this art as set forth in the ensuing disclosure and having, with the above, additional objects and advantages, and whose constructions, combinations and sub-combinations and details of, means, and method of manufacture, and .manner of operation will be made manifest in the following description of the herewith illustrative embodiment; it being understood that modifications, variations and adaptations may be resorted to within the scope, spirit and principles of the in vention as more directly claimed hereinafter.

Figure l is a perspective of a fragment of a stock strip rolled or molded to include characteristic features of the hinge. Figure 2 is a dia-. grammatic detail of a leaf of the hinge to show the scribing gage bit of the stop bead feature of the hinge. Figure 3 is a detail showing the end of an applied hinge leaf and the manner of hitting it with a hammer to get the mortise depth impression needed for cutting the mortise. Figure 4 is a perspective of a door edge fragment and showing the bevelled bottom of the mortise; cut in conformation with scribed depth and plan of the wedge-section leaf. Figure 5 is a sectional end elevation of interpinned leaves of the wedge leaf hinge. Figure 6 is a rear or bead side elevation of the open hinge; unmounted. Figure 7 is a horizontal sectional view of the door and jamb parts on which a hinge is sunk and is in closed position.

The stock strip S of Fig. 1 is made of any desired thickness, according to the duty of the hinge, and has a limb L of uniform thickness which is to be punched out at specified intervals so that tongues will be provided which are to be rolled to make the usual butt hinge, pivot pin bosses or hubs 2 and 3 of complementary leaves (right and left) 4 and 5, Fig. 6, and which leaves are cross-cut from the stock strip S. The opposite longitudinal side of the strip S is of wedge or fin section and tapers from its outer thin edge E up to the near side face of a medially disposed, longitudinal bead B which is here shown as of about quarter round in cross section and, for reasons later set forth, has a height about equal to the thickness of the limb.

Fig. 2 shows the bead B as having its flat side face G as at something less that a right angle as to the plane, hinge-back face 6 which has a decided angle as to the opposite plane, hingefront face l (or the height of the bead B being about equal to the thickest part of the wedge limb of the stock strip.

In preparing a jamb or door corner for mounting of one of these hinges one of the hinge leaves 4 or 5 is laid on the face as of the door jamb, Fig. 3, with the face G of the bead B on the transverse face of the jamb at the desired position along the corner and while firmly held in place the leaf boss is struck a substantial blow by the head of a hammer so that the face G of the bead becomes at once not only an outline marker but the under bevelled head presents at its outer corner a bit feature Ba. biting into the wooden part which is to be mortised, as clearly seen in Fig. 1. While the leaf is in place on the face of the jamb a scribing tool can be run around the rim of the leaf to definitely outline the form of the leaf in plan. When the leaf, used as a gage, is removed the carpenter can quickly chisel out the wood by feathering it off from the deep edge part gradually back and up to obtain an inclined face at the bottom of the mortise M which will bring the inserted hinge leaf 4 or 5 flush with the face of the door or jamb part, as seen in Fig. 7. In construction jobs where a large number of door or jambs are to be mortised to receive butt hinges of this wedge leaf character the mortise cuts can be made by a milling cutter rapidly, accurately and at low cost.

After the mortise has been cut in the wood part the Wedge leaf 4 or 5 is nested in place in the mortise M and the undercut face G is set snugly against the outer plane face of the said part and thus forms a positive setting stop, and since the thickest portion of the wedge leaf is equal to the height of the bead B which determined the full depth of the mortise cut the outer or front face of the installed hinge leaf will be flush with the surface in which it is countersunk; Fig. 7.

The pivot pin P connecting the installed leaves 4 and 5 can be pullable or permanent.

The method of manufacture is not limited in mode to that here set forth; since they may be stamped or forged, or milled or cast.

What is claimed is:

1. A butt type hinge composed of a pair of leaves marginally interpivoted and having plane outer faces to seat flush with structural-part faces and the opposite or inner faces of the leaves having setting stops to engage faces which are at a right angle to the front faces of the leaves; the leaves each having a Wedge crosssection convergent to a thin edge at the swinging margin of the leaf so that the inner face of the leaf diverges as to the outer face thereof.

2. A butt type hinge composed of a pair of leaves marginally interpivoted and which are to be fiush set, the inner faces of the leaves having longitudinal, depth marking gages for scribing depth of mortise cut for the hinge; said gages having, each, a bit edge for gage impression when the relative leaf is applied to the part to be mortised and then struck a hammer blow.

3. The hinge of claim 2, the leaves each being tapered in cross-section to a thin edge at the swinging margin of the hinge.

4. A butt hinge leaf having a longitudinal bead for mortise depth gaging and which bead has a bit edge to demark the length and depth of the mortise, and which bead constitutes a positioning stop when the leaf is countersunk in the prescribed mortise.

JOHN WHITE. GEORGE D. MANVILLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 729,406 Peterson May 26, 1903 1,332,768 Simmons Mar. 2, 1920 1,350,360 Crane Aug. 24, 1920 1,754,013 Fisher Apr. 8, 1930 1,874,732 Young Aug. 30, 1932 2,250,653 Safford July 29,1941 

